So/M: A Requirements Definition Tool Using Characteristics of Existing Similar Systems. - Naoyuki Kitazawa; Akira Osada; Kazuyuki Kamijo; Haruhiko Kaiya; Kenji Kaijiri (COMPSAC, 2008)

Toward quality requirements analysis based on domain specific quality spectrum. - Haruhiko Kaiya; Tomonori Sato; Akira Osada; Naoyuki Kitazawa; Kenji Kaijiri (SAC, 2008)

Proposing metrics of difficulty of domain knowledge using usecase diagrams. - Akira Osada; Daigo Ozawa; Naoyuki Kitazawa; Haruhiko Kaiya; Kenji Kaijiri (SAC, 2008)